150.38% is the change from 266 to 666
Calculation steps:
[( 666 - 266 ) ÷ 266] x 100 = 150.38%
Formula
Percentage change = [(666 - 266) / 266] x 100
Subtract the new number by the original number
666 - 266 = 400
400 ÷ 266 = 1.5037593984962405
1.5037593984962405 x 100 = 150.38%